Motion-picture apparatus



B. D. CHAMBERLIN MOTION PICTURE APPARATUS Filed June 12 1923 3 Sheets-Sheet 1 Q6 7 i FL I L4 Fr-l5 m Fl E 2591 611113 12 flzambrlzz I ORN s.

'May 4 1926.

1,583,655 B. D. CHAMBERLIN MOTION PICTURE APPARATUS Filed June 12 3 Sheets-Sheet 2 INVENTOR Patented May 4, 1926.

UNIT D TA E 1,583,655., PATENT OFFICE,

nnmmm DAY CH-AMBERLIN, OF ROCHESTER, n'nwxonn, Ass'mnon To 'IlAS'TMAfi KoDAxcoMrANY, or noonnsrnn, NEW YORK, A oonr'orm'rron or ivnwyo'nx.

morron-riorunn APPARATUS,

Application'filed June 12, 1923. Serial n6.=s44;989.

in Motion-Picture Apparatus, of whichthe following-is a full, clear, and exact spec1- fieation.

"This invention relates to a motion picture projector and particularly to such-an apparatus of'a simple and portable type, the

main object of the invention being to provide a compact structure that may be used in the home, that is easyto operate, and practical tomanufacture. Particular provision {is made for .the ready rewinding of the film after use; F or this purpose the supply reelis swung to a'position to the rear of the take-up reel, and the drive for thetakeup is'thereby automatically rendered inoperative while the rewinding handle is automatically'rendered operative.

Other objects and advantages will 1 appear in the-speclfication following and the'novel featureswvill be more particularly defined in 'the claims. v

In the drawings, wherein like reference characters denote like parts throughout:

Fig. lis a perspective of aprojector and case-constructedin accordance with and illustra'ting one form of my invention;

.Fig. %2 is aside'elevation of the machine with the cover removed;

Fig. 3-is a similar view ofthe side;

Fig.4 is an end elevation thereof;

opposite Fig 5 is aportion of the drawing mech-- anism removed from the projector;.

Fig. 6 is a fragmentary side elevation of the projector in rewinding position 'Fig. 7 is a fragmentary sectional View of certain parts of the projector in rewinding position;

Fig. 8 is a similar view of certain parts in projecting position, and

Fig. 9 is a detail section on line IX-IX of Fig. 6. j

I'prefe'r to make my projector of a main frame 1 having an upright central frame 2,-top 3, bOttOmlfand ends 5. The: top 3 has two studs 6,'the"enlarged heads 6" of which are engaged by the latches 7 carried upon studs 8=ofa removable cover 9. A handle 10 is provided for carryingthem'a- 7 chine. The cover. 9 consists of sides IL- andends 12, the former preferably engaging slots 13 in the bottom 4- of? thevmain frame 1. The cover lits .over and encloseskthe whole mechanism,"its lower edgesresting on bottom 4. J 1 H Thefi'lm F isdraw n from a supplyifreel 1.4 over sprocket 15, which is driven by crank 1,6;and l1andle17. Iteis then turned into a plane perpendicular u-to its former position and drawn down past the lamphouse 18 by" a suitable pull 'downmechanism, not shown, past the usual projection gate, and then through an opening 19 in panel 2 (Fig. 3). It is I then turned through another loop to plane perpendicular to the gate and drawn over "a sprocket20 (Fig. 2)- from which it is drawn-upon a take-up reel 21.

For rewinding, reel14l is swung upon its supportingtarm.22hingedat123 to the main frameyend 5*into a position ,in t-he rear of an'dzinline' With'reel21,-Y(Fig.

.Reell, islcarried by a shaft 24, being held thereon by; the usual:latch.25.' This shaft, which runs free during ,1projection,

isconnected to the reel 14' byfpin 26 on flange 2'7. afiixedlto the shaft and engaging an aperture 28 of thereel. 'A gear 29 is pinned to shaft 24. .Thisgear may :mesh with ya seoondgear 30 revolubly supported'upon a fixedfshaft 31'but'carried by asleeve shaft.

32.n1'ovable axiallyof shaft 31. A'spring 33 normally, tends, by pressing upon, the cap 34, to press the large. gear 30 into positi onshown in full lines, Fig. 9, when shaft.

24 may be rotated by handle 35 through the crank-"36 carried by' cap .34. In this position reel. 14; may be driven to rewind film when the. parts'are in the position shown inFigs. 6 and'7. 'When the apparatus, as in Fig. .8, is in condition for projecting, a shaft 37 fixed on wall 2 strikes the-cap 3A, moving it and the shaft 32 inwardly against the action ofspring 33, thus moving gear 30 frommesh with gear 29. This movement of gear 30isfrom'the dashed to the full line position, Fig.8. Gear 29 then revolves idly as the machine projects'pictures, and, by releasing latch" 38 which retains support .22.through.arm 239- closed, and swinging support 22 to the winding position: gear 30 is automatically brought into mesh with 29. Alatch =39 retains support 22in rewinding-Lposition 1 through engagement "with aperture 4:0 of end 5.

mounted to turn freely upon hollow shaft inside of which is a shaft 51 thrust outwardly by spring 52, the axial movement being limited by pin 53 and the fiat surface 54 onshaft 50. Rigid with shaft 50 is a clutch disc 55 having inwardly extending pins 48, which slidingly engage corresponding-apertures in disc 55 carried by hollowv shaft 50. When in. the position shown in Fig.8, these pins engage apertures 49 in pulley 45. Extending outwardly from the clutch disc 55 is an extension shaft 57, the end 59 of which is engaged by the strong spring 58 when the reel 14 and its carrier 22 are swung into projection position. Since spring 58 is stronger than spring 52, it forces extension, 57 and hence clutch pins 48 inwardly and establishes a driving rela tion between pulley 45 and reel 21. When, however, arm 22 is swung upon hinge 23 to rewinding position, spring 58, carried by casing 58, will release shaft 57 and spring 52 will force outwardly parts 51, 55 and 57. Pins48 will be withdrawn from apertures 49, releasing pulley 45 so that it mayrun idly. Thus the reel is automatically.

disengaged for rewinding and engaged for winding through the positioning of reel 14. In case clutch pins 48 do not mesh when arm 22 is: swung into projecting position, spring 58 will thrust in upon shaft 57 until the necessary portion of a turn of pulley 45'brings apertures 49 into the proper position when the pins will engage the pulley and drive reel 21. v

The following drive is used with the above mechanism. Handle 17 drives crank' 16 and with it shaft 60 upon which sprocket 15 is afiixed. A sprocket 61 (Fig. 2) is also carried by this shaft, moving sprocket 62 and shaft 68 by chain 64. A second sprocket on shaft 6?) drives sprocket through chain 66, thus moving the film sprocket 20. Shaft 63, (Fig. 5) drives the shutter 64 through gears 65, 66, 67, 68, and 69, and in addition drives pulley 47 connected to pulley 45 by the spring belt 46.

As the pull down mechanism forms no part of my present invention, it will not be herein described.

The operation of the projector is readily apparent from the above description. A full reel 14 is placed on the shaft 24, in the position coaxial with the take-up reel. The lead end of the film F is threaded through hinge 23 to the position shown in Figs. 6

and 7, thus simultaneously rendering the clutch inoperative and rendering the connection between the rewind handle 35 and the supply reel operative. The rear endof the film is then attached to the reel 14,.n0w

empty, and rewound thereon, the reel turning idly.

It is to be understood that the above described embodiment is illustrative' of the principles of my invention and that numerous equivalents and modifications are possible, and I consider as within the scope of my invention all of these that areincluded within the following claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: s

1. Apparatus of the type described comprising means for supporting a reel in a definite position, means for turning such reel to wind a strip of material thereon, a support for a secondreel having two .positions relative to said'definite position, and means automatically rendering inoperative the turning means forthe first reel when the second reel supportis in one of its positions.

2. In a. motion picture apparatus, film advancing mechanism, a support in a fixed position for a first reel, means to turn said reel to wind up film from the film advancing mechanism, a support for a second reel having a first position at which; film may be drawn therefrom tothe film. advancing mechanism, and having a second position at which a reel thereon will be in alignment with the first reel for rewinding.

3. In motion picture apparatus, film-advancing mechanism, a support for a first reel having a definite position, means to turn said reel to wind up film from the filmadvancing mechanism, a support for a second reel having a first position relative to said definite position, at which a reel thereon will be out of alignment with a reel on the first support and at which film may be drawn therefrom to the fil1n-advancing mechanism, and having a second position relative to said definite position at which a reel thereon will be in alignment with the first reel for rewinding.

4. In motion picture apparatus, film advancing mechanism, a support for a first reel having a definite position, means to turnsaid reel to wind up film from the film advancing mechanism, a support for a second reel having a first position relative to said definite position and at which film may be drawn therefrom to the film advancing mechanism, and having a second position relative to said definite position and at which a reel thereon will be in alignment with the first reel for rewinding, a handle for turning said second reel and means for automatically rendering said handle inoperative when the second reel is in its first position. 7

5. In motion pictureapparatus, film advancing mechanism, a support for a first reel having a definite positlon, means to turn said reel to wind up film from the film advancing mechanism, a support for a second reel having a first position relative to said definite position and at which film may be drawn therefrom to the film advancing mechanism, and having a second position relative to said definite position and at which a reel thereon will be in alignment with the first reel for rewinding, a handle for turning said second reel and means for automatically rendering said handle inoperative when the second reel is in its first position, and means for automatically rendering the turning means for the first reel inoperative when the second reel is in its second position.

6. In motion picture apparatus, film advancing mechanism, a support for a first reel having a definite position, means to turn said reel to wind up film from the film advancing mechanism, a support for a second reel hav ing a first position relative to said definite position and at which film may be drawn therefrom to the film advancing mechanism, and having a secondposition relative to said definite position and at which a reel thereon will be in alignment with the first reel for rewinding, and means for automatically rendering the turning means for the first reel inoperative when the second reel is in its second position.

7. In motion picture apparatus, a first reel support in fixed position, an operating drive, connections between said drive and said support including a clutch, a second reel su port having a first position relative to t e first mentioned support and at which film may be drawn from a reel thereon to a reel on the first. support, and having a second position relative to the first mentioned support and, the clutch being operative to establish a driving connection between the drive and a reel on the first support when the second reel support is in it first position and being automatically rendered inoperative when the second reel support is removed from its first position.

8. In motion picture apparatus, a first reel support having a definite position, an operating drive,,connections between said drive and said support including a clutch, a second reel support having a first position relative to said definite position and at which film may be drawn from a reel-thereon to, a reel on the first support, and having a second position relative to said definite position and at which film may be rewound from a reel on Y the first support to a reel on the second support, a rewind drive for a reel on the second support, and simultaneously operative mech- .anisms for automatically rendering the clutch operative and the rewind drive inoperative when the second support is in. its I first position and for renderingthe clutch inoperative and the rewind drive operative when the second support is removed from its first position. I

9. In motion picture apparatus, a first reel support having a definite support, an operating drive, connections between said drive and said support including a clutch, a second reel support having a first position relative to said definite position and at which film may be drawn from a reel thereon to a reel on the first support, and'having a second position relative to said definite position and at which film may be rewound from a reel on the first support to a reel on the second support, a rewind drive for a reel on the second support, and simultaneously operative mechanisms for automatically rendering the clutch operative and the rewind drive inoperative when the second support is in its first position and for rendering the clutch inoperative and the rewind drive operative when the second support is in its second position. e

10. In a motion pictureprojector, a first reel support, a second reel support having a position coaxial to the first reel support, means for feedingfilm from a reel on said second support at said position to a reel on the first support, said second support being movable to a second position in longitudinal alignment with said first reel support, whereby film may be rewound from a reel on said first support to a reel on the second support.

11. In a motion picture projector, a first reel support, a second reel support having a position coaxial to the first reel support, driving means for a reel on said first support, said second reel support being movable to a second position in longitudinal alignment with said first reel support, means for turning a reel on said second support, and mechanisms for rendering said driving means inoperative when the second support BENJA IN 'DAY GHAMBERLIN. F 

